Process of preparing pulverulent materials for molding or briqueting.



PROCESS OF PREFARlNG PULVERULENT MATERlALS FOR li'lOLDlNG 0R BRIQUETlNG,

Specification of Letters Pat-enti. i

Patented April 3G, 1907.

Application filed July 3,1906. Sprial No, 324,622

B@ it known that I, Gillmor: il. Miisiiizii, a Citizen oi tlio United Stains. icsiding :it Nowak, in llili county of lssfix and Stato oli Non' Jersoyj have invent-Pd ai (-irtitin nw.' :ind iisvi'ullnipi'owiiwiii in Piofwx, Puli/erulent Mat nimhl loi" Molding-oi li'nlinvtmg, of which lli@ following is zi ilvsiiiptioii.

lilo oiijoct l liaii'c in View is to pi'odiii'(l :i

tiidinzillyi' tlii'oii i tlizit itl disulizii'g'iiig tiiid is Novat-eil abovev end. The cliziinlyx Viitor pit` S oi' oil niiitoi'izil to tliii lfii it.\v involving' mid7 :ind tliix dilutoil pitoli is (lotliioiijgli :i spout l2, l'i'oni Wliiuli iti drops to ilw iiizitiiiiiil in diil bottoni oi' Lliiiy clioinboi.

'i'lii lsliiil't in tliil f -liziniliii' is rotated atj zi Siilliwionth.' liigli siiuiid to tlii'ow Llio inail@- ii'liinmI il is sliowiiiiid ilmi'nivindly, tlnis ni'iiintiiii'iin;r tliii inzitiii'izil in t-liis uliziiiilmr iiitli itl iiiii'tii-lcl iii zi, Soliani-tod condition so im to lnl till'ootiviily iiotmd on by Llic hot guisos ot" ionil iistion wliitili lloiif'tlii'oiigli tlii V 'liaiiiiliiii' to tliti stmli l. il'ilili blades inii'iiig ai i'zidiiis ol' twieli'v iiiclics, l li Je l'oiiiid tlv/it zi, sliiilt simid ol' 1.8() revolutions por iiiiniitc is siilliviint, to pi'odiicv tliiS oll'oot.

1 ln li(x (cliziinlitii' l liowvviii'. ttlitl shaft.. is rim ucts oi coniiiii cl'iiinibcr :it iis top und noni itS discharging ai ii. loii'ii' siimd, so tlizit ttliii iiizitcrial is not slimi'iiiod oi' kopt iii ii siiiiniiitod condition, init. winmix' iii tinl liotioin oil tlic oliziiiiliei, lli(x liindoi' liningy ik ixid witli tlio iiiilvcriilont inzitciial liy tlit'l stirring notion of die blades tlitiiioii. Foi tliis purpose, willi lila-dos of tliil mdiiis spot-ined; i' lizivo i'oimd lli-Lit iisliait spoed oi' ailiiiiit i4() revolutions por iiiiniitii is siillicinnt, 'Flin olizinilioi (l is; employed l ming tlio foi' coolingr tlio inzitiiiizil so @iS lio liiniliiig pituli to ilii` mndition oi pliitiizity wiwi-ii tlio nizitiiiiiil min lie iiiostl ollic'tivoly inoldtd oi' liiiqiiiittd, :ind iii liliis olizinilioi 1v it is (issn-dilo iliiii ttliii material Should lio tlisclizii'gus into mi clo- IOO tossed and separated more or less, for which purpose a shaft speed of approximately 165 revolutions per minute has been found to be effective.

In carrying out my process the furnaces connected with the chambers A and B are first started in operation so to heat up these portions ot' the apparatus. After thesev chambers are suiiiciently heated, the apparatus is started in operation, when the furnace connected with the chamber B may be shut down completely or partially, since the heated material discharged from the drying chamber A into the chamber B will to a great extent maintain its own temperature in the latter chamber. The pulverulent material is ted to the drying chamber A in regulated quantities in a continuous stream, and in that chamber it is maintained with its particles in a separated condition and is slowly ted forward to they discharging end et theA chamber, while the hot ot'comlnistion travel in the opposite directien through the chamber to the stack, drying and heating the separate particles el the material. The dried and heated materialis delivered by gravity from the drying chamber A to the receiving end ol the mixing chamber' B. At this point a regulated quantity of the binding material, i. c. coal-tar or asphaltnm. pitch, is added to the material-.NTlie melted pitch is delivered'continuously in regulated quantities to -thc lower endof the vl'oamer, to which is also continuously supplied a regulated quantity ol" Water. The pitch is vmaintained in a heated and highly lluid condition in the fo'amer-by means oll the super-4 heated steam supplied to the steam j aeket of the i'oamer. `Nhile in this heated condition the water unites and thoroughly mixes with the pitch, making a large volume ol'v l'oam of diluted pitch, whichvrises and runs ont at the discharge end of the foamer and l'alls uponthe material at the receiving end of the mixing chamber E. In this chamber the pitch is thoroughly mixed with the heated and dried pulverulent material by the stirring action ol the rotating blades, and is at the same time slowly fed toward'the discharging endet' the mixing chamber, Where it is delivered into the receiving end of the cooling chamber Cl In the latter chamber the material is fed vforward to thedischarging end of the chamber, and is cooled sufficiently to bring the pitch to the condition of plasticity where the material can be most effectively molded or briqueted. The required amount of air vto produce the` desired cooling effect.' is drawn through this chamber by regulating the steam jet in the stack 13.

' While I have shown three sections of apparatus in the drawing, one for drying the material, one for mixing the binder with the material', and one for cooling the mixed prod- 6 5 uct, itis evident that We er more sections of apparatus may be used lor each of these purposes,` and under some conditions fairly good results can be obtained without the use oi any cooling chamber and by delivering the mixed material directly from the mixer-to the moldingfor briqueting presses. lt has beenfound essential, however, that the material should be thoroughly dried before the pitch is added to it, sinceeveira small percentage of moisture remaining in the material will prevent the pitch vfrom properly adhering to the particles. When the material is very Wet, additional furnaces maybe added to the drying chamber or chambers preceding the mixing chamber, or the number of drying chambers may be increased What I claim is: l

1; The process ot" preparing pnlrerulent. materials for molding or briqueting, 'consisting in lgirst subjecting the material to heating and drying gases while its particles are maintained in a separated condition, and snbsequently mixing the binder with thedried and heated material, substantially as set l'orth.

2. The process ol' preparing pulverulent materials for molding or briqueting, consisting in first subjecting tln` mateiial to heating and drying gases while the material is maintained with its particles in a separated condition, and then mixing the binder with the dried and heated material by the action of stirring blades upon such material and binder, substantially as s'etl'orth. l

3. The process ol' preparing pulvcr-ulent materials for moldingr or brirpietiiig, consisting in [irst subjecting the pulvernle rial to heating and drying git-"s while; the' IOO nt matematerial is maintained with its particles in a..

separatedcondition, then mixing the binder with such dried and heated-malerinl, and linally subjecting the material to a cooling medium to reducethe binder to the plastic condition, substantially as slet lorth.

t. The process ol preparing pnlverulent materials l'or molding orbriqueting, consisting in lirst subjecting the nmterial to heating and drying gases while the material is maintained with its particlesin a separated condition,lthen mixing the binder with the dried and heated material, and'tlien tossing or slnnvering the combined material ina cham` IIO ber tlnouglrwhich air is drawn to reduce the 1 temperature of the binder to the point ol" plasticity, substantially-as set l'orth.

5. The process ol' preparing pulverulent materials tor molding or briqueting, consisting in first subjecting the material to-heating and drying gases while the material is maintained with its particles in a separated condition, then mixing the binder 'with the dried and heated material by stirring the binder therein, and then cooling the material to the point wherethe binder is plastic by tossing it'-A in a chamberl through which air is drawn, substantially as set tertlr 6. The method of mixing coal-ter'pitch with pulverdlent material for molding or briqueting, consisting in diluting the pitch with Water While in a heated condition, thereby foaminfg the pitch, end then mixing such pitch oem with the pulverulent materiel, substantially as set forth. i

7. The method of preparing pulverulent materials for molding or briqueting, consisting :in rst heating and drying the material, and then mixing with the dried and heated material e. foam of pitch, substantially as set ing in rst subjeotin forth.

8. The method of preparing pulverulent materials for molding or hriqueting, consistthe pulverulent material to heating and rying gases while such material is maintained with its particles in a separated condition, and then mixing with the dried and heated material a foam oi' pitch, substantially as set forth.

9. The method of preparing pulverulent materiels for molding or hriqueting7 consisting in first subjecting the material to heating and drying gases while the material is maintained With its particles in a separated condition, then mixing with the dried and heated material a foam of pitch, Aand then cooling the material until the pitch becomes plastic, substantially as sot forth.

This specification Signed and witnessed this 27th day of Juno, 1906.

GEORGE J. MASIICK.

Witnesses:

JNO. lon'r. TAYLOR, AUG. LONG. 

